CN103442856A - Battery pack for a battery powered tool - Google Patents

Battery pack for a battery powered tool Download PDF

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Publication number
CN103442856A
CN103442856A CN2011800692596A CN201180069259A CN103442856A CN 103442856 A CN103442856 A CN 103442856A CN 2011800692596 A CN2011800692596 A CN 2011800692596A CN 201180069259 A CN201180069259 A CN 201180069259A CN 103442856 A CN103442856 A CN 103442856A
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CN
China
Prior art keywords
battery
battery pack
row
unit
millimeters
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Pending
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CN2011800692596A
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Chinese (zh)
Inventor
约翰·比约恩林格
奥斯卡·布雷格奎斯特
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Husqvarna AB
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Husqvarna AB
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Publication of CN103442856A publication Critical patent/CN103442856A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The present invention relates to a battery pack (104) for a battery powered tool (100). The battery pack (104) includes a plurality of battery cells (202) provided in at least two rows (206) with at least two battery cells (202) in each row (206). The rows (206) are placed on top of each other and each row (206) is displaced relative to each closest row, such that a parallelogram shaped cross-section of the battery pack (104) is formed. The battery pack (104) further includes at least one end row (208, 210) provided as the last row of battery cells on top or below the at least two rows (206), such that the at least one end row (208, 210) includes at least one battery cell (202) less than each of the at least two rows (206).

Description

Battery pack for battery powered tool
Technical field
The present invention relates to a kind of battery pack.Specifically, the present invention relates to a kind of battery pack for battery powered tool (battery powered tool, battery-operated instrument).
Background technology
The hand-held tool of battery power well known in the art such as, but not limited to, chain saw, string trimmer, hedgeclipper, rotating saw etc.The detachable battery group is generally used for for example, providing electric energy for prime mover of the hand-held tool of battery power (motor).
Normally, battery pack comprises a plurality of cylindrical battery cells (cylindrical cell) that are encapsulated in battery container.In the battery pack of prior art, battery unit usually with the shape of square or rectangular basically in a row with in column being arranged in battery container.Yet such layout may not provide the quantity of battery unit compact battery pack and the given volume in battery container also may not utilized best.In addition, the transmission of power connector (power transfer connector) that battery unit is electrically connected to the electric terminal be arranged on battery powered tool is arranged on the outer surface of battery container and this has further reduced the compactedness of battery pack.Such battery pack, when being attached to battery powered tool, may cause operability and the design of low-level ergonomics of the difference of battery powered tool.
The name of authorizing on March 28th, 2006 is called " for the adapter (Adapter for a meter) of instrument " and transfers the U.S. Patent No. 7 of Tantalus system group (Tantalus Systems Corp.), 019,666, a kind of battery pack of the adapter for ammeter is disclosed.U.S. Patent No. 7,019,666 also disclose and have been arranged so that battery pack has the battery unit of parallelogram shape.Parallelogram shape allows battery pack only in two directions to be inserted in corresponding battery case, and this is different from the four direction in the battery pack of square shape.In this case, parallelogram shape causes effectively constructing so that battery pack is electrically connected to or disconnects in battery container.In addition, the name of announcing on September 10th, 2009 is called the U.S. published application No.2009/0226803 of " manufacture method of battery, battery pack and use therein splicing ear (Battery; battery pack and method of manufacturing connection terminal used therein) ", has disclosed a kind of fire prevention battery pack.The battery pack disclosed in the U.S. openly applies for No.2009/0226803 has parallelogram shape.Yet the arrangement of the battery unit disclosed in aforementioned patent and published may not be optimized on space and possibly can't obtain compact battery pack.
In view of above-mentioned, need a kind of compact battery for battery powered tool, it has the optimum arrangement mode of battery unit.
General introduction
In view of above-mentioned, a purpose is solution or at least alleviates the problems referred to above.Specifically, this purpose is to provide a kind of compact battery pack of the unit with optimal placement for battery powered tool.
Realize at least in part this purpose by the group of the new battery for battery powered tool according to claim 1.This battery pack comprises a plurality of battery units, and these battery units are arranged at least two rows, and (row OK), has at least two battery units in every row.These rows are arranged on top of each other, and every row is with respect to each most displacement of the row of approaching (displaced, skew), thereby form the cross section of the parallelogram shape of battery pack.Battery pack further comprises at least one end row (end row, end row), end row is arranged on described at least two rows' Shang Huo bottoms, top as last row of battery unit, make at least one end package draw together few at least one battery unit than the every row in described at least two rows.This of battery unit kind of arrangement may be realized the compactly designed of battery pack.Therefore, battery pack can be improved operability and the ergonomics design of battery powered tool.
According to claim 2, the battery unit that is arranged at least one end row can be orientated as and make parallelogram shape have truncated corners (truncated corner, block turning).Truncated corners can be removed at least one acute angle and further realize the compacter structure of battery pack by the parallelogram shape from battery pack.
According to claim 3, battery unit can be cylinder form.In addition, according to claim 4, these rows can be with respect to the be shifted half-distance of diameter of battery unit of each immediate row.One half-distance of the diameter of battery unit can provide the compactest arrangement of circular batteries unit.
According to claim 5, two sides of the battery pack of parallelogram shape can form the approximately angle of 100 degree-150 degree, and the angle that preferably approximately 110 degree-130 are spent.In addition, according to claim 6, two sides of the battery pack of parallelogram shape can form the approximately angle of 30 degree-80 degree, and the angle that preferably approximately 50 degree-70 are spent.
According to claim 7, two turnings of the battery pack of parallelogram shape can be truncations.Two truncated corners can further realize by two acute angles of removal of the parallelogram shape from battery pack the compacter structure of battery pack.
According to Claim 8,, the diameter of battery unit can be in the about scope of 10 millimeters-25 millimeters, preferably approximately in the scope of 15 millimeters-20 millimeters, and is more preferably approximately 18 millimeters.Alternatively, according to claim 9, battery unit can have the length in the about scope of 50 millimeters-80 millimeters, and the length in the about scope of 60 millimeters-70 millimeters preferably.
According to claim 10, an end row at least one end row can comprise few battery unit more than than the every row in described at least two rows.In addition, end row can comprise the transmission of power connector of the battery pack that is positioned at parallelogram shape.By the inside in battery pack, provide power to transmit connector, battery pack can be compacter.In addition, the power in the battery pack of parallelogram shape transmits connector and can be subject to better protection than the power transmission connector that is arranged on the battery pack outside.
According to claim 11, in another aspect of the present invention, can provide the battery powered tool comprised according to the described battery pack of any one in claim 1-10.In addition, according to claim 12, battery powered tool can be the hand-held garden instrument.
Brief description of drawings
The present invention is described below with reference to accompanying drawings in further detail, in the accompanying drawings:
Fig. 1 shows the stereogram of chain saw according to the embodiment of the present invention;
Fig. 2 A shows the stereogram of battery pack according to the embodiment of the present invention; And
Fig. 2 B shows the sectional view of battery pack according to the embodiment of the present invention.
The description of embodiment
The present invention is described hereinafter with reference to the accompanying drawings more fully, shown in the drawings of the example embodiment of the present invention that comprises one or more aspects of the present invention.Yet the present invention can embody and should not be construed as with multiple different form and be defined in the embodiment of setting forth here; On the contrary, provide these embodiments to make the disclosure will be more comprehensively with complete, and scope of the present invention is communicated to those of skill in the art fully.For example, one or more aspect of the present invention can be used to other embodiments and even in the device of other types.In the accompanying drawings, identical Reference numeral means identical element.
Fig. 1 shows the partial perspective view of example battery power chain saw 100 according to the embodiment of the present invention.Chain saw 100 can be used to gardens or forestry applications.Yet, in the situation that do not depart from essence of the present invention, the present invention can also be included in any other battery powered tool, for example linear trimmer, hedgeclipper, brill, reciprocating saw, rotating saw, electric power screwdriver or other handheld powers or garden instrument.In addition, can use element or the material of any appropriate size, shape or type.
Chain saw 100 comprises the main body 102 of encapsulation prime mover (not shown).In various other embodiments of the present invention, prime mover can be motor, such as, but not limited to ac motor, dc motor etc.Motor optionally supplies to give electric energy by battery pack 104.Can control the actuating of motor or go by on/off switch part (not shown in figure 1) and activate.In addition, chain saw comprises other control systems, and it can comprise that one or more sensors are with for example speed of regulating prime mover, the various parameters of torque.Can be according to for example, the various parameters of electricity needs, life expectancy, cost, weight or size are selected rated power and other specifications of motor.
In addition, chain saw 100 comprises work implement (working implement) (not shown) that joins main body 102 to.Normally, work implement comprise have continuous peripheral guide slit guide rod to support chain saw.In addition, drive sprocket and lazy sprocket wheel can correspondingly be present in near-end and the far-end of guide rod with respect to main body 102, so that chain saw rides on them.In the operating process of chain saw 100, can be by motor via suitable transmission device (not shown in accompanying drawing) drive sprocket and drive thus chain saw, above-mentioned transmission device for example can comprise (but being not limited to) one or more gears, band driving, friction-driven or its any combination.Transmission device can be for one or more speed drive sprocket optionally.
As shown in fig. 1, main body 102 also comprises that top handle 106 and side grip 108(partly illustrate in Fig. 1).For example, yet, in the situation that do not depart from scope of the present invention, the handle structure of other types (back handle structure) is also possible.Top handle 106 and/or side grip 108 can comprise that grip portions is to help the manual grasping of chain saw 100.In addition, guard member 110 is set to protect the user in cutting operation process.
Fig. 2 A shows the stereogram of battery pack 104 according to the embodiment of the present invention, and wherein lid is removed.Battery pack 104 can removably be attached to the main body 102 of chain saw 100 to help charging, to keep and/or storage.Battery pack 104 can comprise suitable discharged mechanical fastener (not shown in accompanying drawing), for example, but be not limited to bayonet connection, cooperation recess and groove, there is the connector of elastic component (for example spring), or any combination in these is with in the situation that be mechanically connected to battery pack 104 without any special tool(s) the main body 102 of chain saw 100.Yet, in alternative embodiment of the present invention, battery pack 104 can be fixedly attached to electric tool 100.
As shown in Figure 2 A, battery pack 104 comprises that a plurality of battery unit 202(that are encapsulated in battery container 204 are called " unit 202 " hereinafter).Each in unit 202 has cylinder form basically.Yet the unit 202(of any other shape for example has the unit of ellipse or rectangular cross section) be all possible.In addition, unit 202 can be such as the unit that is based on lithium ion, NI-G etc.Can, according to various parameters such as the electric power such as, but not limited to electric tool 100 and charging requirement, cost, weight and sizes, carry out quantity and the type of selected cell 202.
As shown in Figure 2 A, these unit 202 are arranged at least two rows 206, arrange in the every row in 206 and all have at least two unit 202.In addition, battery pack 104 also comprises at least one end row 208 or 210, this at least one end row as last row of unit 202 and the row of being arranged on 206 is top and/or below.Should be noted that, positional term " top (top) " is to use with respect to the orientation of the battery pack 104 of describing in Fig. 2 A with " following (below) ".In addition, end row 208 comprises few at least one unit 202 than the every row in row 206.In addition, at least one in end row 208 and/or 210 can comprise few unit 202 more than than the every row in row 206.As shown in Figure 2 A, only by the mode of example, the every row who arranges in 206 comprises four unit 206.In addition, the end at the top of the row of being arranged on 206 row 208 comprises three unit 206, and the end of the row of being arranged on 206 bottoms row 210 comprises a unit 202.As shown in Figure 2 A, the quantity of unit 202 and the quantity of arranging 206, be only for schematic purpose, and battery pack 104 can comprise the unit 202 of any amount that the row 206 with any amount arranges within the scope of the invention.In a plurality of alternative embodiment of the present invention, two or more unit 202 also can be arranged adjacent to each other along the direction on the plane that is substantially perpendicular to paper.In addition, arrange 206 and/or end row 208 and 210 in each with respect to the row of approaching most, can be shifted so that battery pack 104 has the cross section (describing in detail in conjunction with Fig. 2 B) of substantially parallel quadrangle form.
The cross section of the parallelogram shape of battery pack 104 may obtain the compact Layout mode of these unit 202.Compactly designed operability and the ergonomics design that can improve chain saw 100 of this of battery pack 104.In addition, end row 208 and/or 210 has at least one unit 202 of the every row in the row of being less than 206, to form the compacter structure (illustrating in the back in conjunction with Fig. 2 B) of battery pack 104.
Fig. 2 B shows the sectional view of battery 104 according to the embodiment of the present invention.As shown in Figure 2 B, the every row in unit 202 has diameter D.In addition, arrange 206, with the every row in end row 208 and 210, all with respect to immediate row's displacement, basically approximate half the distance of the diameter D of unit 202, i.e. D/2.This has caused the cross section of the substantially parallel quadrangle form of battery pack 104.In addition, the relative displacement that equals the distance of about D/2 provides the optimum arrangement mode of these unit 202, the battery 202 of the maximum quantity that can hold in the given space of battery pack 104.Therefore, for the battery pack 104 of given volume or size, the power output of battery pack 104 can maximize.
In embodiments of the present invention, on the diameter D substrate of unit 202 from approximately 10 millimeters in the about scope of 25 millimeters, and preferably approximately 15 millimeters in the about scope of 20 millimeters, and be more preferably approximately 18 millimeters.In addition, in embodiments of the present invention, the length of each unit 202 basically from approximately 50 millimeters in the about scope of 80 millimeters, and preferably from 60 millimeters in the about scope of 70 millimeters.For those of skill in the art, may it is evident that, the size of unit 202 is only exemplary in essence, and in the situation that do not depart from essence of the present invention, unit 202 can have any other size.
In addition, as shown in Figure 2 B, two sides 212 of battery container 204 and 216 are parallel to each other basically, and two sides 214 of battery container 204 and 218 basically parallel to each other.As shown in Figure 2 B, two of battery container 204 side 212 and 214 angulation α between them.In addition, due to the cross section of the parallelogram shape of battery pack 104, the angle between 216Yu side, side 218 is substantially equal to angle [alpha].In embodiments of the present invention, angle [alpha] can be located substantially on from approximately 30 the degree in the scope of 80 degree, and preferably from approximately 50 the degree in the scope of 70 degree.In addition, as shown in Figure 2 B, two sides 212 of battery container 204 and 218 angulation β between them.In addition, due to the cross section of the parallelogram shape of battery pack 104, the angle between 214Yu side, side 216 is substantially equal to angle beta.In embodiments of the present invention, angle beta be located substantially on from approximately 100 the degree in the scope of 150 degree, and preferably from approximately 110 the degree in the scope of 130 degree.The scope of angle [alpha] and angle beta can form the compacter structure of battery pack 104.Yet, for those of skill in the art, may it is evident that, the scope of angle [alpha] and β is only exemplary in essence, and in the situation that do not depart from essence of the present invention, angle [alpha] and β can have any value.In addition, the side 212,214,216 and 218 of battery container 204 can have any length or thickness.
In addition, the unit 202 in end row 208 is arranged to have the first truncated corners 220 between the side 212 and 214 of cross section at battery container 204 of parallelogram shape of battery pack 104.By the mode of example, end row 208 has few at least one unit 202 than the every row in row 206, to allow to form the first truncated corners 220.In addition, the unit 202 in end row 210 is arranged so that the cross section of the parallelogram shape of battery pack 104 has the second truncated corners 222 between side 216 and 218.By the mode of example, end row 210 has few at least one unit 202 than the every row in row 206, to cause formation the second truncated corners 222.The first truncated corners 220 and/or the second truncated corners 222 can be removed the more compact structure that at least one acute angle forms battery pack 104 by the parallelogram shape cross section from battery pack 104.
As shown in Figure 2 B, end row 210 can comprise that the power that is positioned at battery container 204 transmits connector 224.By the mode of example, by the row of end 210 is set to, than few at least two unit 202 of every row in row 206, power be transmitted to connector 224 and be contained in battery container 204.Power transmits connector 224 can comprise one or more terminals of being made by conductive material.Power transmits connector 224 can be electrically connected to unit 202 the one or more instrument electric terminals (not shown in the accompanying drawings) on the main body 102 that is arranged on chain saw 100.In addition, battery pack 104 can comprise that one or more electric conductor (not shown)s are electrically connected to power with the utmost point by unit 202 and transmit connector 224.In addition, power transmission connector 224 can also charge by external power source for making unit 202.By power being transmitted to the inside that connector 224 is arranged on battery container 204, substitute power is transmitted on the outer surface that connector 224 is arranged on battery container 204, make the battery pack 104 can be compacter.In addition, in operating process, power transmits connector 224 and for example can be protected, away from corrosive elements (, humidity) and mechanical failure.
In accompanying drawing and specification, the preferred embodiment of the present invention and example are disclosed, although and used specific term, they only use and are not used in the purpose of restriction on common and descriptive sense, have set forth scope of the present invention in claim below.

Claims (12)

1. the battery pack for battery powered tool (100) (104), wherein said battery pack (104) comprising:
A plurality of battery units (202), described battery unit is arranged at least two rows (206), there are at least two battery units (202) in every row (206), wherein said row (206) is arranged on top of each other, and wherein every row (206) is with respect to each immediate row's displacement, thereby form the cross section of the parallelogram shape of described battery pack (104)
It is characterized in that, described battery pack (104) further comprises at least one end row (208,210), described at least one end row as last row of battery unit, be arranged on above described at least two rows (206) or below, described at least one end row (208,210) comprises few at least one battery unit (202) than the every row in described at least two rows (206).
2. battery pack according to claim 1 (104), the described battery unit (202) in wherein said at least one end row (208,210) is orientated as and is made described parallelogram shape be provided with truncated corners (220,222).
3. battery pack according to claim 1 and 2 (104), wherein said battery unit (202) is cylinder form.
4. battery pack according to claim 3 (104), half of the diameter (D) that wherein said row (206,208,210) is battery unit (202) with respect to the distance of each immediate row's displacement.
5. according to battery pack in any one of the preceding claims wherein (104), two sides (212 of the battery pack of wherein said parallelogram shape (104), 218) angle (β) formed is that approximately 100 degree-150 are spent, and is preferably about 110 degree-130 degree.
6. according to battery pack in any one of the preceding claims wherein (104), the angle (α) that two sides (212,214) of the battery pack of wherein said parallelogram shape form is that approximately 30 degree-80 are spent, and is preferably about 50 degree-70 degree.
7. according to the described battery pack of any one (104) in claim 2-6, two turnings (220,222) of the battery pack of wherein said parallelogram shape (104) are truncated.
8. battery pack according to claim 3 (104), wherein the diameter (D) of battery unit (202), in the about scope of 10 millimeters-25 millimeters, preferably in the about scope of 15 millimeters-20 millimeters, and is more preferably approximately 18 millimeters.
9. according to battery pack in any one of the preceding claims wherein (104), the length that wherein said battery unit (202) has is in the about scope of 50 millimeters-80 millimeters, and preferably in the about scope of 60 millimeters-70 millimeters.
10. according to battery pack in any one of the preceding claims wherein (104), few battery unit more than than the every row in described at least two rows (206) is drawn together in end package in wherein said at least one end row (210), wherein, described end row (210) comprises the transmission of power connector (224) of the battery pack (104) that is positioned at described parallelogram shape.
11. a battery powered tool (100), comprise according to the described battery pack of any one (104) in claim 1-10.
12. battery powered tool according to claim 11 (100), wherein said battery powered tool (100) is the hand-held garden instrument.
CN2011800692596A 2011-03-22 2011-03-22 Battery pack for a battery powered tool Pending CN103442856A (en)

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PCT/SE2011/050308 WO2012128680A1 (en) 2011-03-22 2011-03-22 Battery pack for a battery powered tool

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DE (1) DE112011105074T5 (en)
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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2544863A1 (en) * 2010-03-06 2013-01-16 Husqvarna AB Battery driven electric tool

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DE102009035487A1 (en) * 2009-07-31 2011-02-03 Daimler Ag Battery for e.g. hybrid drive integrated vehicle, has cells connected with heat conductive plate and arranged in recesses by holding plate, and supporting element made of hardening material and attached in gap among cells and recess

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DE3502449A1 (en) * 1984-02-08 1985-08-08 Robert Bosch Gmbh, 7000 Stuttgart Electropneumatic drilling and/or percussion hammer with a battery-fed drive motor
US4847513A (en) * 1988-02-26 1989-07-11 Black & Decker Inc. Power-operated device with a cooling facility
US5208525A (en) * 1988-12-10 1993-05-04 Gardena Kress + Kastner Gmbh Electric power supply assembly for a cordless electric appliance
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JPH06223804A (en) * 1993-01-26 1994-08-12 Matsushita Electric Works Ltd Battery pack
US5553675A (en) * 1994-06-10 1996-09-10 Minnesota Mining And Manufacturing Company Orthopedic surgical device
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DE102009035487A1 (en) * 2009-07-31 2011-02-03 Daimler Ag Battery for e.g. hybrid drive integrated vehicle, has cells connected with heat conductive plate and arranged in recesses by holding plate, and supporting element made of hardening material and attached in gap among cells and recess

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WO2012128680A1 (en) 2012-09-27

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